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To measure heat loss in two test tubes which represent bodies, one which sweats (the wet test tube) and one body which doesn't sweat (the dry test tube).

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  • Essay length: 1207 words
  • Submitted: 22/02/2006
  • Marked by teacher: (?) Sam Morran
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Teacher essay summary

3 star(s)

This essay is not really a full write up of a practical but rather a discussion of preliminary tests.

It is a good example of how running prelims helps to design an experiment. It could be enhanced to include a summary of how the prelims resulted in the final design.

***

Marked by teacher Sam Morran 15/05/2013

The first 200 words of this essay...

Biology Coursework: Sweaty Bodies

Aim:

To measure heat loss in two test tubes which represent bodies, one which sweats (the wet test tube) and one body which doesn't sweat (the dry test tube).

Apparatus:

2 Thermometers

2 Stoppers

2 Boiling Tubes

2 Measuring Cylinders

Cotton Wool

Paper Towels

Timer

Water

Previous Knowledge:

I know that when the body gets to hot, the sweat glands produce sweat, which evaporates of the skins surface, and cools the body as it evaporates. The evaporation of water needs a lot of heat energy. This heat energy is taken from the body when the sweat evaporates.

Prediction:

I think that the wet test tube will cool the fastest because this is what happened during my preliminary experiment. The wet test tube cooled the water down by 22OC more than the dry test tube. Also my knowledge of the way the human body works helps support my prediction because the body produces sweat to cool the body down, and the wet test tube acts in the same way.

Diagram:

Fair Testing:

For all the

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MbT essay summary

This essay is not really a full write up of a practical but rather a discussion of preliminary tests.

It is a good example of how running prelims helps to design an experiment. It could be enhanced to include a summary of how the prelims resulted in the final design.

***

Marked by teacher Sam Morran 15/05/2013

Marked by a teacher

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